[hibernate-dev] Is @SecondaryTable required when a join table is specified?
gbadner at redhat.com
Fri Mar 1 14:06:04 EST 2013
I've seen lots of unit tests that have @SecondaryTable. I didn't make the connection that it was non-association attributes that refer to a secondary table.
Thanks for the clarification.
----- Original Message -----
> From: "Hardy Ferentschik" <hardy at hibernate.org>
> To: "Gail Badner" <gbadner at redhat.com>
> Cc: "Hibernate hibernate-dev" <hibernate-dev at lists.jboss.org>
> Sent: Friday, March 1, 2013 2:07:56 AM
> Subject: Re: [hibernate-dev] Is @SecondaryTable required when a join table is specified?
> Secondary tables and associations (join tables) are really two
> different things. A secondary table allows you to map your entity
> properties to
> multiple tables. @JoinTable on the other hand are used to map
> associations and configure certain properties of the join table.
> One does not require the other. I am not sure what makes you believe
> that using @JoinTable requires the use of @SecondaryTable.
> If you after some examples have a look at the JPA spec as well. It is
> a good starting point.
> Regarding the metamodel branch, I am not sure about the binders and
> so on, but afaicr the sources does not imply the link
> between join table and secondary table.
> On 1 Jan 2013, at 7:13 AM, Gail Badner <gbadner at redhat.com> wrote:
> > I noticed that org.hibernate.test.annotations.onetoone.OneToOneTest
> > and OptionalOneToOnePKJCTest uses this mapping:
> > https://github.com/hibernate/hibernate-orm/blob/master/hibernate-core/src/test/resources/org/hibernate/test/annotations/onetoone/orm.xml
> > Son.father specifies a join-table ("father_son"), but has no
> > <secondary-table>. There is no @SecondaryTable defined in Son
> > (this is a unidirectional association).
> > I thought that @SecondaryTable was required when an association
> > uses a join table. Currently, that's how it works in the new
> > metamodel.
> > Should it be optional?
> > Thanks,
> > Gail
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